From a post in HF:http://www.helifreak.com/attachment...15&d=1118935415http://www.helifreak.com/showthread.php?t=6199
You basically need to replace the lower bearing block with a motor mount for the electric, likely a home made one, and find a pinion that meshes perfectly with the main gear, hopefully a mod 1 type gear.
I know Scorpion made a few Mod 1. Maybe JR newer pinions may fit.
The original pinion is somewhere between a 10 to 12t.
You need to figure out the ratio that you want and select a pinion and motor kv, and voltage (12S Li-po?) that will work for the range that you want.
I hope you make this happen, I love the way the Vigors flew.
Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-